Continuous kiln.



No. 763,533. PATENTED JUNEVZS, 1904.

P. L. YOUN'GREN.

CONTINUOUS KILN.-

APPLICATION Hmm 15.111,30. 190s.

No MODEL.

No. 763,533. PATLNTLD JUNE z8, 1904.

P. L. YOUNGRLN.

CONTINUOUS KILN.

. 'APPLICATION FILED MAR. so. 1903. No MODEL. 'rs-SHEET z.

` WITNESSES.- R

m7 M M A BY//ga l d ATTORNEYJ Patented June 28, 1904.

STATES PAT-ENT OFFICE.

PETER L. YOUNGREN, OF MILWAUKEE, WISCONSIN.

CONTINUOUS KILN SPECIFICATION forming part of Letters Patent No. 763,533, dated June 28, 1904.

Applicationflled March 30, 1903.

improvements in bricks; and to this end my invention contemplates a preliminary conversion of the fuel into gas, with adequate facilities for keeping the -iiues for such gas open and also regulating the size of such openings at successive stages in the process.

My invention also contemplates utilizing the heat radiating from the finished bricks for the purpose of partially drying the `green bricks with an upwardly-flowing currentof hot air before subjecting them to the watersmoking process.

i Other objects ofthe invention will be apparent from the description.

In the drawings, Figure 1 is a plan view of my invention,'drawn partly in horizontal sectio,n. Fig. 2 is a partial front elevation, also showing one compartment and part of another in cross-section. Fig; -3 is. a sectional View drawn on line a; of Fig.l l. Fig. 4 is an enlarged perspective view of one of the shutters.

Like parts are identified bythe same reference characters throughout.`

A series of compartments Al are arranged in the form of a double row,with a main draftflue B between the inner ends of the compartments of the respective rows and firing-ovens C at their outer ends.4 Each-oven O is provided with a distributing-Hue D, which leads inwardly between adjacent 'compartments A andmay beconnected with the main draftlue B bya removable hood Z), which is adapted to cover the vertically-extending apertures B Il', which lead downwardly from the top of the kiln to the main iiue B and distributing-flue D, respectively. From the distribvuting-flues D branch fines CZ extend down- -hood Z1 of the draft-flues) Serial No. 150,150. (No model.)

wardly and communicate with connectingpassages E at the foot of the division-wall E between the adjacent compartments A. Similar flues d', in lineal alinement with the iiues d, extend upwardly from each of the fines D to the top of the kiln, where they are provided with removable covers F. The lines d `are provided with valves f, preferably conto cover the vertical connecting-fines b when it is desired to direct the gases downwardly through the flues d. A main hot-air liue I, located above the main draft-flue B, is provided-with branch iiues K,'extending to the `topof-the kiln and 4provided with covers la.

These-lines are used to admit hot air to the iiue I, as hereinafter explained, and also to connect the iue I with iiues b', D, and Z'of any compartment A when it is desired to admit hot 'air to such compartment. In the lat- -ter case the covers 7e and F are removed from the iues K and d whichit is desired to connect and a hood L (similar in form to the is adjusted over the open 'lues.

It will be observed that each compartment A has one or more apertures M through its top, with covers M normally closing the same. These apertures may be connected with a branch B/ of the main draft-line B by means of hoods N. It will also be observed, Fig. 4, that the shutters O are provided with hooks P. These shutters are adapted to be inserted in lues d Z to close the passages E when it is desired to separate a compartment from the others.

To brieliy describe the operation of the kiln,

it will be assumed that the kiln has twelve IOO No. 2 is also 'open to be filled with green brick. These two compartments are separated from No. 8 by shutters O. Compartment No. 3 is connected with the hot-air lue I by a hood L, covering the connecting-ues K and whereby hot air is admitted to the compartment numbered 3 through the fines D (l and passage E, the air being thus made to enter the bottom or' such compartment. A draft of hot air is maintained through this compartment by a hood N, connecting the compartment-aperture M with one of the ap'- ertures B of the main draft-flue. Compartments A, numbered 7 and 8 in Fig. 1, are being firede., a gas-producing iire is maintained in the ovens C of these compartments and the gas directed through the corresponding ducts Z into the passages E leading thereto, the gas being burned in the passages and compartments and the products of combustion passingtherefrom in a downdraft through the bricks and by means or' passages E through the compartments 6, 5, and 4. The bricks in compartment 6 will be at a red heat, those in compartment 5 will be taking color, and those in compartment 4 will be undergoing the water-smoking or drying process. Compartments numbered 4 and 5 are connected with the main draft-flue B by hoods b, connecting the ues b B', which fines are open for these compartments. Compartments 8 to 12, inclusive, are occupied by cooling brick, and compartment ll is shown supplying hot air to the main hot-air flue through the medium or' a hood R connecting an aperture M with a branch iiue K of the hot-air pipe. Thecompartment numbered l2 will b e the next one to be opened for the removal or' the brick, and compartment numbered 6 will be the next one to be red. observed that the course of the draft from compartments 8 and 7 is toward and through compartments 6, 5, and 4, and in each compartment its course is downwardly through the bricks and then through the passages E, when it is deflected upwardly by the bag-walls into the upper part of the next compartment. The compartment 3 is separated from all the others by shutters, those between it and compartment 2 being adjusted as far toward compartment 2 as possible, having the iiues Z in this wall open to the passages E on that side of 'the shutters which communicates with compartment numbered 3. In this compartment 3 the course of the hot-air draft is reversed, the hot air entering at the left through the passages E, from which it is deflected into said compartment by the shutters which cut off compartment 2, and passes upwardly through the bricks to the top aperture M and through the hood N to the main draft-flue. It will be understood that this flue is connected with a suitable stack T at one end. The arrangement of the fines CZ and d crossing the distributing-fines in lineal alinement not From the foregoing it will be` only permits access for the purpose of adjusting the valves, but facilitates cleaning the lues. rIhe air supplied forcombustionpurposes enters through the compartment l, which is open, and passes through cross-flue S to compartment 12, from which it passes through all the compartments on that side and through cross-flue S to compartments 6, 5, and 4. By adjusting shutters across part of the passages between compartments 11 and 10 some of the air is deiiected and passes into compartment 3, as above explained, while the remainder passes on through 10 and 9 and reaches compartment 8 in a highly-heated condition. By adjusting these shutters the amount of air supplied for combustion can be accurately regulated. The heat taken up by the air in cooling the inished bricks is thus not only utilized, but the heat serves to promote combustion. Only a small quantity o1 gas is necessary to raise the temperature to the required'degree in compartments 7 and 8, and therefore sutiicient surplus oxygen remains of the admitted airY to prevent the reduction of the oXids in the clay.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. In a kiln of the described class, the combination of inclosing walls forming a series of brick-receiving compartments; a gas-producing oven for each compartment, communicating with a distributing-flue in the side wall of the compartment; said wall having branch fluesv leading downwardly from the distributing-flue and communicating with the lower portion of the compartment, and corresponding branch lues leading upwardly to the eX- terior, and provided with suitable removable covers.

2. In a kiln of the described class, the combination of inclosing walls forming a series of brick-receiving compartments, having connecting-passages through the lower portions of the side walls; said side Walls being provided with distributing-finesV above said passages, extending longitudinally of the compartment, and branch iiues communicating between the distributing-fines and said passages; a source of gas-supply for each distributing-lue; a valve for each branch Hue; and shutters adapted to -be inserted through the lues to yclose said passages.

' 8. In a kiln of the described class, the combination of inclosing Walls forming a series or' brick-receiving compartments, having connecting-passages through the lower portions of the side walls; said side walls being provided with distributing-lues above said passages, extending longitudinally of the cornpartment, and branch ues communicating between the distributing-fines and said passages; a source of gas-supply for each distributing-fiue; a valve for each branch ue; and shutters adapted to be inserted through the IOO IOS

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ISO

Hues to close said passages; said kiln being also provided with a main hot-air Hue, and means for separately connecting the same with any of the brick-receiving compartments.

4. In a kiln of the described class, a set of inclosing walls forming a series of brick-receiving compartments, having interconnecting passages, communicating between their lower portions; the walls of said kiln being provided with a gas-distributing Hue for each compartment, with branch Hues leading to said interconnecting passages, a main draft-Hue adapted to be connected interchangeably with the distributing-Hues, and a hot-air Hue, also adapted to be connected interchangeably with the distributing-Hues; valves controlling the How of air or gas through the Hues; removable shutters adapted to separately close the having passages communicating between the,v

lower portions of the compartments in each series and from the end compartments of each series to those of the adjacent series; the division-walls between the respective series being provided with amain draft-Hue and a main hot-air Hue and the division-walls between the compartments of each series being provided with a gas-distributing Hue extending between adjacent compartments substantially at right angles to the main draft-Hue and above the connecting-passages between such compartments but in communication with such passages by downwardly-extending branch Hues; means for supplying combustible gas to each of said distributing-Hues, and means for connec-ting each of said distributing-Hues with ither the main hot-air Hue or the main draft- 6. The combination of a set of inclosing walls forming a plural series of compartments and having passages communicating between the lower portions of the compartments in each series and from the end compartments of each series to those of the adjacent series, the division-walls between the respective series being provided with a main draft-Hue and a main hot-air Hue, and the division-walls between the compartments of each series being provided with a gas-distributing Hue extending between adjacent compartments substantially at right angles to the main draft-Hue and above the connecting-passages between such compartments, but in communication with such passages by downwardly-extending branch Hues; means for supplying combustible gas to each of said distributing-Hues; movable devices for connecting each of said distributing-Hues with either the main hot-airHue or the main draft- Hue, and movable devices for connecting any of said compartments directly with the hot-air Hue.

7 In a kiln of the described class, a set of inclosing walls forming a series of brick-receiving compartments having apertures leading from their upper portions to the exterior; side walls for said compartments having bottom passages communicating between the compartments; gas supply Hues having branch Hues communicating with said passages and to the exterior through the top of the kiln; said kiln being also provided with a main draft-Hue, and a main hot-air Hue, each having branches extending to the top of the kiln; covers for all said exteriorly-communicating branch Hues and apertures; and connecting devices, adjustable on top of the kiln, to connect said branch Hues and apertures in any desired relation of intercommunication.

8. The combination of inclosing walls forming a plural series of compartments, the central division-wall between the compartments of the respective series being provided with a main draft-Hue and the division-walls between the compartments of each series being provided with connecting-passages in their lower portions communicating between adjacent compartments and gas-distributing Hues extending inwardly from the 'side walls through the division-walls toward the main draft-Hue and above said connecting-passages; a gas-producing oven located at the outer end of each transverse division-wall, and communicating with the distributing-Hue in such wall; each such wall being provided with branch Hues leading downwardly to the connecting-passages and upwardly through the top wall from ranged with the Hrst-mentioned Hues to per-v mit a reversal of the draft through the bricks, and also arranged to direct heated air from a compartment Hlled with finished, but heated, bricks, to another compartment filled with green bricks.

In testimony whereof I aHix my signature in the presence of two witnesses.

PETER L. YOUNGREN.

Witnesses:

Lnvnnn'r'r C. WHEELER, JAS. B. ERWIN.

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